Getting:

Notice: Undefined variable: canvas in /home/norcorp/public_html/media/com_easysocial/apps/user/textbook/views/canvas/view.html.php on line 85

Warning: include(/home/norcorp/public_html/media/com_easysocial/apps/user/textbook/themes/default/.php): failed to open stream: No such file or directory in /home/norcorp/public_html/administrator/components/com_easysocial/includes/template/template.php on line 293

Warning: include(): Failed opening '/home/norcorp/public_html/media/com_easysocial/apps/user/textbook/themes/default/.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/norcorp/public_html/administrator/components/com_easysocial/includes/template/template.php on line 293

http://norcorp.net/index.php/apps/canvas/64-textbook

afther installing the app_sample